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jQuery Ajax serialize form data example

In this article, you will learn how to serialize form data and insert the data into a MySQL table by using jQuery Ajax.

The serialize() method is the constructor of the jQuery which is used in form data encoding and data processing. It processes the form data for posting to another page. It can control or manipulate structured form data for presenting on another page or storing in a database after form submission. This method returns a URL encoded text string by serializing form values for submission.





In the way of utilizing this serialize() method, the entire form data will be converted into an associative array and client can use this form data in PHP script by utilizing GET/POST method. It can follow up on a jQuery object that has chosen individual form controls. The element must have a name attribute to include the form element's value in the serialized string. To include radio buttons and check box values, they must be checked. But, we can not include the data from the file select element. As this method does not send files through a form.





Database Table

To store the form data in the back-end, we must have a database. In this article, we have used the MySQL database.

So, let's first create a database name 'demo' in MySQL and a table name 'user_form' using the following MySQL statement. You can either use your existing database or copy and paste the following command in your database.

CREATE TABLE IF NOT EXISTS `user_form` (
  `id` int(11) NOT NULL AUTO_INCREMENT,
  `name` varchar(100) NOT NULL,
  `email` varchar(100) NOT NULL,
  `message` varchar(100) NOT NULL,
  PRIMARY KEY (`id`)
)


index.php

Next, create a simple form 'index.php' to get information from user. This form contains all the fields that the user_form table has. In this, we have included the jQuery and Bootstrap libraries.

<!DOCTYPE html>  
<html>
	<head>
		<title>jQuery Ajax serialize form data example</title>
		<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/css/bootstrap.min.css" />  
                <script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/js/bootstrap.min.js"></script>  
                <script src="https://ajax.googleapis.com/ajax/libs/jquery/2.2.0/jquery.min.js"></script>  
	        <script type="text/javascript">
	        $(function(){
		  $("#button").click(function(){
		  var dataString = $("#serializeForm").serialize();
		  $.ajax({
		  type: "POST",
		  url: "upload.php",
		  data: dataString,
		  success: function(data)
		  {
			alert('Success!');
			$("#serializeForm")[0].reset();
		  }
		  });
		  });
	        });
	        </script>
	</head>
	<body>
	<div class="container">
		<form id="serializeForm" name="myForm">
		<div class="form-group">
			<label>Enter name:</label>
			<input type="text" id="name" name="name" class="form-control">
		</div>
		<div class="form-group">
			<label>Enter Email:</label>
			<input type="text" id="email" name="email" class="form-control">
		</div>
		<div class="form-group">
			<label>Enter Message:</label>
			<textarea name="message" id="message" class="form-control"></textarea> 
		</div>
		<button type="submit" class="btn btn-primary" id="button">Submit</button>
		</form>
	</div>	
	</body>
</html>




upload.php

Here is the PHP script of "upload.php" file, which simply retrieve and insert the form values submitted by the user.

<?php 

$conn = mysqli_connect("localhost", "root", "", "demo");  
if(isset($_POST["name"]))  
{  
	$name = mysqli_real_escape_string($conn, $_POST["name"]); 
	$email = mysqli_real_escape_string($conn, $_POST["email"]);  	
	$message = mysqli_real_escape_string($conn, $_POST["message"]);  
	$query = "INSERT INTO user_form(name, email, message) VALUES ('".$name."','".$email."','".$message."')";  
	if(mysqli_query($conn, $query))  
	{  
	   echo '<p>You have entered</p>';  
	   echo '<p>Name:'.$name.'</p>';  
	   echo '<p>Email:'.$email.'</p>';  
	   echo '<p>Message : '.$message.'</p>';  
	}  
}  
?>

The above code will produce the following result -

jQuery Ajax PHP

The database updated with the inserted value -

jQuery Ajax PHP



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